ACM-2031 1000 A AC/DC Multipurpose Clamp Meter & Multimeter

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Absolute error of my measurement

"Absolute error of my measurement" service allows evaluating measurement precision considering measurement uncertainty (or error) in absolute value. It is important in case you are making measurements at the range edge, when the value of error contributes into the value displayed by the device.

To get the range of values it’s enough to enter the evaluation of the value under measurement into Value box and to see the range of possible values including all of the standard errors.

Clamp meters ACM-2031 are designed for non-contact current measurement as well as AC/DC voltage, resistance and other measurements.

Specifications:

Function

Range

Max Resolution

Accuracy

DC Voltage

400mV

0.1mV

±(0.8%+5d)

4V

0.001V

40V

0.01V

400V

0.1V

1000V

1V

AC Voltage

4V

0.001V

±(1.2%+5d)

400V

0.01V

700V

0.1V

700V

1V

DC Current

400A

0.1A

±(3.0%+5d)

1000A

1A

AC Current

400A

0.1A

±(3.0%+8d)

1000A

1A

Resistance

400Ω/4kΩ/40kΩ/400kΩ/4MΩ/40MΩ

0.1Ω

±(1.0%+5)

Frequency

40Hz/400Hz/4kHz/40kHz/100kHz/200kHz

0.01Hz

±(0.1%+1)

Capacitance

4nF/40nF/400nF/4μF/40μF

1pF

±(4%+10)

Temperature

-40°C…750°C

0.1°C

±(1%+3)

General Specifications:

Diodes test

Continuity check

Data hold

Relative measurements

Auto turn-off

Low battery indicator

Auto range selection

Diameter: 42mm/1.7in

Display: 3999 counts

Supply: 3x1.5V (AAA)

General accessories:

Test leads

K-type thermocouple

Technical documentation

Soft case

Measurement procedure

DC voltage measurement

Insert the black and red test leads into the COM and VΩHz input terminals respectively.

Set rotary switch at desired V= position. Connect the test lead tips in parallel with the circuit to be measured. Be careful not to touch any electrical conductors. The polarity of the red lead connection will be indicated along with the voltage value.

Read the measure result from the display.

AC voltage measurement

Insert the black and red test leads into the COM and VΩHz input terminals respectively.

Set rotary switch at desired V~ position. Connect the test lead tips in parallel with the circuit to be measured. Be careful not to touch any electrical conductors.

Read the measure result from the display.

When measuring AC voltage, pushing Hz/DUTY button, the frequency of ACV will show on LCD display.

DC current measurement

Set the rotary switch at desired 400A or 1000A position.

Push the FUNC. button to select DC current.

Push the “ZERO” button to get relative measurement mode and “0000” show on LCD display.

Press the trigger to open transformer jaw and to clamp one conductor only, making sure that the jaw is firmly closed around the conductor.

Read current value on LCD display.

NOTE: As the jaw core may remain some magnetic force after using for awhile. If the display can not reach “0”, open the jaws several times. Then work again.

AC current measurement

Set the rotary switch at desired 400A or 1000A position.

Push the FUNC. button to select AC current.

Press the trigger to open transformer jaw and to clamp one conductor only, making sure that the jaw is firmly closed around the conductor.

Read current value on LCD display.

Resistance measurement

Insert the black and red test leads into the COM and VΩHz input terminals respectively.

Set rotary switch at desired Ω range position.

Push FUNC. button to select Ω.

If the resistance being measured exceeds the maximum value of the range or the input is not connected, an overrange indication “OL” will be display.

Read the measure result directly from LCD display.

NOTE: When checking in-circuit resistance, be sure the circuit under test has all power removed and that all capacitors have been discharged fully.

Continuity testing

Insert the black and red test leads into the COM and VΩHz input terminals respectively.

Capacitance measurement

Connect test leads across the capacitor under measurement and be sure that the polarity of connection is observed (Note: The polarity of the red lead connection is positive “+”).

Read the measure result directly from the display.

Measuring frequency

Insert the black and red test leads into the COM and VΩHz input terminals respectively.

Set rotary switch at desired Hz position, Push Hz/Duty button to select frequency mode and connect the test lead tips in parallel with the circuit to be measured. Be careful not to touch any electrical conductors.

The signal amplitude must also be greater than the sensitivity level.

Determine that the amplitude level of the signal to be measured is not greater than the input voltage limit (25V DC/AC rms.).

Read the measure result directly from LCD display.

NOTE: The input voltage should be between 1V and 10V rms. ac. If the voltage is more than 10V rms. Reading may be out of the accuracy range.

Measuring frequency for clamp

Set the rotary switch to "Hz" position.

Press the trigger to open transformer jaw and to clamp one conductor only, making sure that the jaw is firmly closed around the conductor.

Read the measure result of frequency of AC current flowing through the transformer jaw from the display.

NOTE: Frequency range: 40Hz to 400Hz (>20A).

Measuring temperature

Set the rotary switch at °C Position. The LCD display will show “OL”.

Connect the red lead of “K” type thermocouple into the VΩHz jack and the black lead of “K” type thermocouple into the “COM” jack. The LCD display will show the current environment temperature.

Contacting the object be measured with the thermocouple probe.

Read temperature value on the LCD display.

Duty cycle test

Set rotary switch at desired Hz position. Push Hz/Duty button to select % mode and connect the test lead tips in parallel with the circuit to be measured. Be careful not to touch any electrical conductors.